Public water system · NM3590115
ActivePajarito Mountain Ski Area
At a glance
Pajarito Mountain Ski Area (PWSID NM3590115) is an active transient non-community water system in Los Alamos County, New Mexico. It reports serving 350 people through 3 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in January 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
350
Service connections
3
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Pajarito Mountain Ski Area compare with other water systems in Los Alamos County?
By EPA's size categories, Pajarito Mountain Ski Area is a very small system (500 people or fewer). Los Alamos County has 2 active public water systems, and Pajarito Mountain Ski Area is the 2nd-largest of them by population served. Its population served is well below the county average of 12,675 people per system, and accounts for 1.4% of the 25,350 people reported by systems filed under the county. Across New Mexico, the 1,165 active systems average 1,885 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Pajarito Mountain Ski Area is about 143% above that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. New Mexico has 369 active transient non-community water systems, 32% of the state's 1,165 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,009 New Mexico systems (87%) list groundwater as their primary source.
Who owns and regulates Pajarito Mountain Ski Area?
EPA lists Pajarito Mountain Ski Area as privately owned. The NM state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 1 of the 2 active systems in Los Alamos County (50%) are also privately owned.
Does Pajarito Mountain Ski Area have drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in January 2020. The violations listed here began between November 2016 and January 2020. By type: 5 public notice, recordkeeping or other, 4 required treatment not met and 3 monitoring. The contaminant or rule involved most often is Public Notice (5 of them). EPA lists 12 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2020-01-17 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2018-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-04-28 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2018-04-28 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2018-03-22 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2018-03-22 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2017-06-14 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2017-06-14 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2017-03-19 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2017-03-19 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2016-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Pajarito Mountain Ski Area: frequently asked questions
Who runs Pajarito Mountain Ski Area?
Pajarito Mountain Ski Area (PWSID NM3590115) is a transient non-community water system privately owned. It is regulated by the NM state drinking water program.
How many people does Pajarito Mountain Ski Area serve?
Pajarito Mountain Ski Area reports serving 350 people through 3 service connections in Los Alamos County, New Mexico.
Where does Pajarito Mountain Ski Area get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Pajarito Mountain Ski Area have any drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in January 2020. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Pajarito Mountain Ski Area's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in January 2020. For current results, consult EPA ECHO, or the NM state drinking water program.
Where can I find Pajarito Mountain Ski Area's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Pajarito Mountain Ski Area is a transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Los Alamos County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Los Alamos Municipal Water System | Los Alamos | 25,000 | Community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Pajarito Mountain Ski Area, PWSID NM3590115, New Mexico”, https://aquacensus.com/water-systems/new-mexico/pajarito-mountain-ski-area-nm3590115 (data as of October 1, 2026).